net.sf.saxon.instruct
Interface FunctionSignature

All Known Implementing Classes:

XQueryFunction, XSLFunction

public interface FunctionSignature

The class FunctionSignature represents informationn about the name, argument types, and result type of a function.

Method Summary

SequenceType[]	getArgumentTypes() Get the required types of the arguments to this function, as an array
int	getFunctionFingerprint() Get the name of the function, as a namepool fingerprint
int	getNumberOfArguments() Get the number of arguments (the arity) of the function
SequenceType	getResultType() Get the type of value returned by this function

Method Detail

getFunctionFingerprint

int getFunctionFingerprint()

Get the name of the function, as a namepool fingerprint

Returns:

the fingerprint of the function name

getResultType

SequenceType getResultType()

Get the type of value returned by this function

Returns:

the declared result type, or the inferred result type if this is more precise

getArgumentTypes

SequenceType[] getArgumentTypes()

Get the required types of the arguments to this function, as an array

Returns:

an array of SequenceType objects, one for each formal argument, indicating the required type of the argument

getNumberOfArguments

int getNumberOfArguments()

Get the number of arguments (the arity) of the function

Returns:

the function's arity